所有的碳水化合物均来源于植物。
糖类也是碳水化合物,糖类的来源是精制糖——蔗糖,它是一种食品甜味剂、防腐剂和果糖。
Sugars are also carbohydrates, sources of sugars are refined sugar—sucrose, which is a food sweetener and preservative and fruit sugars—fructose.
碳水化合物最初是按照它们的天然来源来命名的,例如甜菜糖、甘蔗糖、葡萄糖、甜玉米糖原。
Carbohydrates were first named according to their natural sources, like beet sugar, cane sugar, grape sugar and sweet corn glycogen.
What about sources of protein, that and carbohydrate for you, and how do those look and where are you getting those from?
那蛋白质的来源呢,还有碳水化合物,这些都长什么样,你从何摄入这些元素
The macro nutrients are the big constituents of food, that's protein, carbohydrate, and fat.
大量营养素是食物重要组成来源,即蛋白质,碳水化合物和脂肪
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